<p>
    Reads a xlsx in the current working directory.
    return A List,See <a href="https://github.com/alibaba/easyexcel/blob/master/src/test/java/com/alibaba/easyexcel/demo/read/ReadTest.java">easyexcel</a> for details.
</p>
<p>
    <strong>Example:</strong><br/>
    <code><pre>
def output = readExcel file: 'historyList.xlsx';
println output // 这里返回一个列表，每个元素是一个字典

</pre></code>
</p>
<p>

</p>
